Guichard

Auguste G. Guichard founded his company in 1827. In 1835, he was joined by his Brother-in-Law Pierre-Louis Gautrot.

In 1846, Guichard sold the company to Gautrot, who changed the name to his own. There is evidence however, that the name Guichard was still used on instruments until as late as 1855 and mauby even after that, making it very difficult to accurately date a Guichard instrument.